Baseband Unit; Startup Management Circuits - Huawei U8950 Maintenance Manual

U8950 Maintenance Guide V1.0

10.1 Baseband Unit

10.1.1 Startup Management Circuits

Circuit Block Diagram
Working Principle
The U8950 uses an independent power management chip PM8029, with the startup principle
controlled using Qualcomm codes. During the startup process, the PM8029 power
management chip converts the main power supply voltage (VHP_PWR) to various voltages
listed in the following table.
2012-10-22 Huawei Proprietary and Confidential
10 Principles and Failure Analysis
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